Answer:
Because of the less reactivity of copper.
Explanation:
As well as being resistant to the elements and thereby less likely to be affected by rainfall, hail, and mildew than other types of roofing, copper is also one of the most fireproof materials available. Copper is also highly resistant to thermal changes and thereby doesn't deteriorate quickly.
Magnesium would also corrode PDQ. Magnesium sheeting would also pose an unacceptably high fire hazard.
Answer:
Covalent bonds
Explanation:
Covalent bonds
These types of chemical bonds are between the atoms of same or comparable electronegtivity .
The formation of bond is to attain stability of the compound formed .
Hence , octet rule plays a major rule .
For example ,
The bond between the atoms of H₂ is a covalent bond , since , one atom of H have only 1 electron in its valence shell .
So it shares its one electron with another Hydrogen atom to attain stability , and forms a covalent bond .
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Answer:
a structural formula
Explanation:
A structural formula simply shows the arrangement of atoms on a compound or molecule.
They are mostly used in representing hydrocarbons.
Through a structural formula we can give name to a compound.
For example, the compound given is called Propane, an aliphatic hydrocarbon with 3-carbon atoms.
The bond relationship connecting the species are also shown in this designation.